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DMD4059 Series Strain Gauge to DC Isolated Transmitter
Range Selection
Rotary switches and a slide switches on the side of the module are
used to select input and output ranges to match your application.
Switch A:
Excitation voltage
Switch B:
Input range
Switch C:
Input offset (see table on next page)
Switch D:
Output range
Switch E :
Set to "V" for voltage output or
Set to "I" for current output
It is generally easier to select ranges before installing the module
on the DIN rail. The tables below list available settings, ranges,
and offsets. The module side label lists common ranges.
Determine how much output in millivolts the load cell will pro-
duce at full load. Multiply the manufacturer's mV/V sensitivity
specification by the applied excitation voltage.
For example, a load cell rated for 3 mV/V sensitivity using 10
VDC excitation will produce an output of 0 to 30 mV for load
variations from 0 to 100%.
3 mV/V sensitivity X 10 VDC excitation = 30 mV range
Excitation Voltage Setup
Excitation
Refer to the sensor manufac-
turer's recommendations to
determine what excitation volt-
age to use.
Set Excitation rotary switch A to
desired excitation voltage.
After installation the excitation
fine adjust potentiometer may
be used to precisely trim this
voltage, if desired.
I/O Range Selection B, C, D, E
1. From the table below, find the rotary switch combination that
matches your I/O ranges and set rotary switches B, C, and D.
2. Set switch E to "V" for voltage output or "I" for current output.
3. For ranges that fall between the listed ranges use the next
highest setting and trim the output signal with the zero and
span potentiometers as described in the Calibration section.
Output
0-1 V
0-2 V
0-4 V
Switches
BCDE
BCDE
BCDE
Input
0-5 mV
200V
208V
201V
0-10 mV
A00V
A08V
A01V
0-20 mV
300V
308V
301V
0-25 mV
600V
608V
601V
0-30 mV
E00V
E08V
E01V
0-40 mV
B00V
B08V
B01V
0-50 mV
000V
008V
001V
0-100 mV
800V
808V
801V
0-120 mV
F00V
F08V
F01V
0-200 mV
100V
108V
101V
0-250 mV
400V
408V
401V
0-300 mV
C00V
C08V
C01V
0-400 mV
900V
908V
901V
Electrical Connections
Check white model/serial number label for module operating
voltage to make sure it matches available power.
WARNING! All wiring must be performed by a qualified electri-
cian or instrumentation engineer. See diagram at right for
terminal designations and wiring examples.
Avoid shock hazards! Turn signal input, output, and power off
before connecting or disconnecting wiring. Connect I/O wiring
before power wiring.
Module Power Terminals
When using DC power, either polarity is acceptable, but for
consistency with similar products, positive (+) can be wired to
terminal 13 and negative (–) can be wired to terminal 16.
Switch A
10 V
A
Using Offset Switch C
9 V
9
Offset switch C allows canceling or taring of non-zero dead-
8 V
8
weights or other sensor offsets such as:
7 V
7
Compensate for tare weights or scale deadweight to get
O
6 V
6
zero output when a load is on the platform.
5 V
5
Compensate for low-output sensors (e.g., less than 1 mV/V)
O
4 V
4
that may have large zero offsets. Switch C can realign the
zero control so it has enough range to produce the desired
3 V
3
zero output.
2 V
2
Raising the offset to allow calibration of bipolar sensors
O
1 V
1
such as ±10 mV.
0 V
0
Lowering the offset to compensate for elevated input
O
ranges such as 10-20 mV.
1-5 V
0-5 V
0-8 V
2-10 V
BCDE
BCDE
BCDE
BCDE
206V
209V
202V
207V
A06V
A09V
A02V
A07V
306V
309V
302V
307V
606V
609V
602V
607V
E06V
E09V
E02V
E07V
B06V
B09V
B02V
B07V
006V
009V
002V
007V
806V
809V
802V
807V
F06V
F09V
F02V
F07V
106V
109V
102V
107V
406V
409V
402V
407V
C06V
C09V
C02V
C07V
906V
909V
902V
907V
Signal Input Terminals
Connect up to 4 strain gauges or load cells. See manufacturer's
specifications for wiring designations and wire color-coding.
Polarity must be observed when connecting inputs.
CAUTION: Never short the excitation leads together. This will
cause internal damage to the module.
Some bridges may have one or two sense leads. See manu-
facturer's specifications. Sense leads allow the DMD4059 to
compensate for leadwire resistance effects. Observe polarity
when connecting sense leads.
If no sense lead is used, jumper sense (+) terminal 6 and excita-
tion (+) 12.
Calibration should be done after all connections are made.
Strain Gauge to
DMD4059
Excitation
Input
A
B
4
4
1. Set Switch A for desired Excitation Voltage.
2. Set Switches B/C/D for desired Input / Output ranges.
3. Set Switch E for Voltage or Current as required.
Connections
4. Set Excitation / Zero / Span / Test Cal. Controls
Term. #
Signal
Excitation Switch
3
Sig. Out –
4
Sig. Out +
Voltage
Position
6
Sense Lead
10V
A
9
Sig. Input +
9V
9
8V
8
10
Exc. –
7V
7
11
Sig. Input –
6V
6
5V
5
12
Exc. +
4V
4
3V
3
13
Power +
2V
2
1V
1
16
Power –
0V
0
0-10 V
±5 V
±10 V
0-2 mA 0-4 mA 0-8 mA 2-10 mA 0-10 mA 0-16 mA 4-20 mA 0-20 mA
BCDE
BCDE
BCDE
BCDE
203V
204V
205V
200I
A03V
A04V
A05V
A00I
303V
304V
305V
300I
603V
604V
605V
600I
E03V
E04V
E05V
E00I
B03V
B04V
B05V
B00I
003V
004V
005V
000I
803V
804V
805V
800I
F03V
F04V
F05V
F00I
103V
104V
105V
100I
403V
404V
405V
400I
C03V
C04V
C05V
C00I
903V
904V
905V
900I
DC Isolated Transmitter
Output
V
I
Offset
Output
C
D
E
4
For more Details
and Instructions
see Data Sheet
INPUT
OUTPUT
Rotary Switches
BCD
BCD
BCD
BCD
BCD
BCD
BCD
BCD
BCD
BCD
0-1V
200
A00
300
600
E00
B00
000
800
100
400
0-5V
209
A09
309
609
E09
B09
009
809
109
409
1-5V
206
A06
306
606
E06
B06
006
806
106
406
+/-5V
204
A04
304
604
E04
B04
004
804
104
404
0-10V
203
A03
303
603
E03
B03
003
803
103
403
+/-10V
205
A05
305
605
E05
B05
005
805
105
405
4-20mA
207
A07
307
607
E07
B07
007
807
107
407
1. Switch C does not interact with
any other switch and is the
only switch needed to correct
zero offsets. Its only purpose
is to adjust or cancel effects of
the low end of the input range
not corresponding nominally
to 0 mV. Setting this switch to
"0" results in no offset.
2. To RAISE the output zero, rotate
switch C from "1" thru "7",
until the Zero control can be set
for your application.
3. To LOWER the output zero,
rotate switch C from "9" thru
"F", until the Zero control can
be set for your application.
4. After all switches are set,
repeat the calibration proce-
dure.
BCDE
BCDE
BCDE
BCDE
208I
201I
206I
209I
A08I
A01I
A06I
A09I
308I
301I
306I
309I
608I
601I
606I
609I
E08I
E01I
E06I
E09I
B08I
B01I
B06I
B09I
008I
001I
006I
009I
808I
801I
806I
809I
F08I
F01I
F06I
F09I
108I
101I
106I
109I
408I
401I
406I
409I
C08I
C01I
C06I
C09I
908I
901I
906I
909I
Signal Output Terminals
Polarity must be observed when connecting the signal output.
The DMD4059 output can be wired to provide either a sinking
or sourcing mA output. If your device accepts a current input,
determine if it provides power to the current loop or if it must be
powered by the DMD4059 module.
Use a multi-meter to check for voltage at your device's input
terminals. Typical voltage may be 9-24 VDC. See the wiring
diagram for the appropriate connections.
Offset
Switch C
% of Span
105%
7
90%
6
75%
5
60%
4
45%
3
30%
2
15%
1
0%
0
–15%
9
–30%
A
–45%
B
–60%
C
–75%
D
–90%
E
–105%
F
BCDE
BCDE
BCDE
202I
207I
203I
A02I
A07I
A03I
302I
307I
303I
602I
607I
603I
E02I
E07I
E03I
B02I
B07I
B03I
002I
007I
003I
802I
807I
803I
F02I
F07I
F03I
102I
107I
103I
402I
407I
403I
C02I
C07I
C03I
902I
907I
903I
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